1. A researcher is studying the effects of a new fertilizer on the growth of tomato plants. They plant 24 tomato seedlings and divide them into three groups of 8. One group receives the new fertilizer, one group receives a different fertilizer, and the control group receives no fertilizer. After 4 weeks, the researcher measures the height of each plant. The researcher wants to determine if there is a statistically significant difference in the height of the plants between the three groups. Which statistical test would be most appropriate for the researcher to use?

2. A researcher is investigating the effect of a new drug on the survival of cancer cells in vitro. They expose cancer cells to different concentrations of the drug and measure the percentage of cells that survive after 48 hours. Which statistical test should the researcher use to analyze the data and determine if there is a significant difference in cell survival between the different drug concentrations?

3. A scientist is studying the effect of pH on the activity of an enzyme. They set up five test tubes, each containing the same amount of enzyme and substrate, but with different pH levels. After a fixed time, they measure the amount of product formed in each test tube. Which of the following is the best way to analyze the data and determine the effect of pH on enzyme activity?

4. A researcher is investigating the effect of pH on the activity of an enzyme. They set up five experiments, each with the same concentration of enzyme and substrate, but at different pH levels: 4.0, 5.0, 6.0, 7.0, and 8.0. They measure the rate of product formation in each experiment. The results show that the enzyme activity is highest at pH 7.0 and decreases as the pH deviates from this value. Which of the following conclusions can be drawn from these results?

5. A researcher is investigating the effect of different types of fertilizers on the yield of a crop. They set up four plots, each with the same soil and growing conditions, but with different fertilizers applied. After the growing season, they measure the yield (in kilograms per square meter) of each plot. Which of the following is the best way to analyze the data and determine the effect of the fertilizers on crop yield?

6. A biologist is studying the population dynamics of a species of fish in a lake. They collect data on the number of fish in the lake over a 10-year period. Which of the following statistical analyses would be most appropriate for the biologist to use to understand the trends in the fish population over time?

7. A researcher is studying the effects of a new drug on the growth of bacteria. They inoculate 12 petri dishes with the same strain of bacteria and expose them to different concentrations of the drug. After 24 hours, they measure the diameter of the bacterial colonies in each dish. The researcher wants to determine if there is a correlation between the drug concentration and the diameter of the bacterial colonies. Which statistical analysis would be most appropriate for the researcher to use?

8. A researcher is investigating the effect of temperature on the rate of a chemical reaction. They set up four experiments, each with the same starting concentrations of reactants, but at different temperatures: 10°C, 20°C, 30°C, and 40°C. After a fixed time interval, they measure the concentration of the product formed in each experiment. The results show that as the temperature increases, the rate of the reaction increases exponentially. Which of the following conclusions can be drawn from these results?

9. A researcher is investigating the effect of different types of soil on the growth of a plant species. They plant the same number of seedlings in four different soil types and measure the height of the plants after a fixed time. Which of the following is the best way to analyze the data and determine the effect of soil type on plant growth?

10. A researcher is studying the effects of a new drug on the growth of bacteria. They inoculate 4 petri dishes with the same strain of bacteria and expose them to different concentrations of the drug. After 24 hours, they measure the diameter of the bacterial colonies in each dish. Which of the following is the best way to analyze the data and determine the effect of the drug concentration on bacterial growth?